An exterior mirror adjustment mechanism for a vehicle

Abstract

The application discloses a fine adjustment mechanism of an automobile outside rearview mirror, which comprises a folding motor, a shell for mounting the folding motor, a planetary gear at the output end of the folding motor, a control column in the inner ring of the planetary gear and connected with the connecting part of the rearview mirror, a clamping plate elastically arranged with the control column, a clamping groove opened in the inner ring of the planetary gear and clamped with the clamping plate, an induction coil arranged in the control column, and a magnetic block arranged in the clamping plate. The closed loop formed by the induction coil is electrified to generate a magnetic field to magnetically attract the magnetic block. In the failure state of the folding motor, the induction coil is electrified to generate a magnetic field, the magnetic field magnetically attracts the clamping plate containing the magnetic block, the clamping plate is separated from the clamping groove, the planetary gear is separated from the control column, the rearview mirror cannot be interfered by the folding motor, and the angle of the rearview mirror can be manually adjusted at will.

Description

Technical Field

[0001] This invention relates to the field of vehicle parts technology, and in particular to a fine-tuning mechanism for automotive exterior rearview mirrors. Background Technology

[0002] Car exterior rearview mirrors are essential components that help drivers constantly observe the status of vehicles to the side and rear. They are usually equipped with folding motors for electronic control to adjust the tilt angle of the car exterior rearview mirrors in order to achieve the best viewing angle.

[0003] However, when the electronic adjustment fails, such as the wear of the teeth between the planetary gears in the folding motor during long-term use, causing unstable meshing, it becomes difficult to drive the rearview mirror to rotate or reset when adjusting or folding it back. In this case, when the electronic adjustment fails and loses the ability to adjust the rearview mirror angle, it will be inconvenient to obtain the status of vehicles approaching from the rear and sides while driving. Summary of the Invention

[0004] The purpose of this invention is to propose a micro-adjustment mechanism for automotive exterior rearview mirrors, which incorporates mechanical redundancy and features both electric and manual dual-mode drive. When electronic adjustment fails, manual adjustment of the rearview mirror is used to complete the angle adjustment of the rearview mirror.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fine-tuning mechanism for a car exterior rearview mirror, comprising:

[0007] Folding motor;

[0008] The outer casing is used to mount the folding motor;

[0009] Planetary gears are located at the output end of the folding motor;

[0010] The control column is located on the inner ring of the planetary gear and is connected to the rearview mirror.

[0011] The card plate and control column are flexibly configured.

[0012] The slot is located on the inner ring of the planetary gear and engages with the card plate for restriction.

[0013] The induction coil is located inside the control column;

[0014] Magnetic blocks are installed inside the card plate;

[0015] In this process, energizing the closed loop formed by the induction coil generates a magnetic field, which in turn attracts the magnetic block, causing the card plate to retract towards the control post despite its elasticity, thus removing the restriction between the card plate and the card slot.

[0016] Preferably, an elastic groove is provided in the center of the control column, and an annular foam is provided on the inner wall of the elastic groove. Two symmetrically arranged horizontal grooves are provided in the control column, and two clamping plates are slidably connected to the two horizontal grooves respectively. One end of the clamping plate is in contact with the foam.

[0017] Preferably, a metal cylinder is fixedly connected to the control column. The metal cylinder is made of conductive metal material. An iron core is fixedly installed inside the metal cylinder. An induction coil is regularly wound on the iron core, and both ends of the induction coil are connected to the metal cylinder. The metal cylinder passes through the control column, and one end of it extends into the elastic groove. The height of the end extending into the elastic groove is lower than that of the card plate.

[0018] Preferably, a connecting ring is coaxially fixed to the control column, and a chassis is coaxially fixed to the connecting ring. A power supply is installed on the chassis, and a trigger plate is elastically connected to the chassis. The trigger plate is made of the same material as the metal cylinder, and the positive and negative terminals of the power supply are connected to the trigger plate through wires.

[0019] Preferably, a central groove is formed in the center of the chassis, a central ring is fixedly connected to the central groove, a retaining ring is fixedly connected to the bottom of the central ring, a trigger plate is slidably connected inside the central ring, a tension spring is set between the trigger plate and the retaining ring, and the two ends of the tension spring are respectively connected to the trigger plate and the retaining ring. The positive and negative terminals of the power supply are both connected to the two ends of the trigger plate in the area on the upper side of the trigger plate that does not overlap with the metal cylinder.

[0020] Preferably, the chassis has a transverse groove, a positioning plate is slidably connected in the transverse groove, a compression spring is provided in the transverse groove, the two ends of the compression spring are respectively connected to the positioning plate and the inner wall of the transverse groove, and the outer shell has multiple positioning grooves adapted to the positioning plate.

[0021] Preferably, the end of the positioning plate away from the compression spring is a triangular tip, and the shape of the positioning groove is adapted to the triangular tip of the positioning plate to form a triangular groove shape.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] In the event of a folding motor failure, this invention generates a magnetic field by energizing the induction coil. This magnetic field magnetically attracts a card plate containing a magnetic block, causing the card plate to detach from the slot. This disengages the planetary gear from the control column. After rotating the card plate at any angle until it can no longer engage with the slot, the folding motor can no longer interfere with the rotation of the rearview mirror, allowing the rearview mirror angle to be manually adjusted at will. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a fine-tuning mechanism for an automotive exterior rearview mirror proposed in this invention;

[0025] Figure 2 This is a schematic diagram of the structure of a micro-adjustment mechanism for an automotive exterior rearview mirror proposed in this invention from another perspective;

[0026] Figure 3 This is a schematic diagram of the connection structure between the planetary gear and the control column in a micro-adjustment mechanism for an automotive exterior rearview mirror proposed in this invention.

[0027] Figure 4 for Figure 3 A structural decomposition diagram.

[0028] In the diagram: 1. Folding motor; 2. Housing; 3. Planetary gear; 4. Control column; 5. Card plate; 6. Card slot; 7. Magnetic block; 8. Elastic groove; 9. Foam; 10. Horizontal groove; 11. Metal cylinder; 12. Iron core; 13. Connecting ring; 14. Chassis; 15. Power supply; 16. Trigger plate; 17. Center groove; 18. Center ring; 19. Retaining ring; 20. Tension spring; 21. Horizontal groove; 22. Positioning plate; 23. Compression spring; 24. Positioning groove. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] Reference Appendix Figure 1 -Appendix Figure 4 A micro-adjustment mechanism for a car exterior rearview mirror, comprising:

[0031] Folding motor 1;

[0032] Outer casing 2, used to mount folding motor 1;

[0033] Planetary gear 3 is located at the output end of folding motor 1;

[0034] Control column 4 is located on the inner ring of planetary gear 3 and is connected to the rearview mirror connection part;

[0035] Card plate 5 is flexibly set with control column 4;

[0036] The slot 6 is located on the inner ring of the planetary gear 3 and engages with the card plate 5 for restriction.

[0037] The induction coil is located inside control column 4;

[0038] Magnetic block 7 is installed inside the card plate 5;

[0039] When the closed loop formed by the induction coil is energized, a magnetic field is generated, which magnetically attracts the magnetic block 7, causing the card plate 5 to retract towards the control post 4 despite its elasticity, thus releasing the restriction between the card plate 5 and the card slot 6.

[0040] With the above technical solution, when the folding motor 1 fails, the induction coil is energized to generate a magnetic field. The generation of the magnetic field magnetically attracts the card plate 5 containing the magnetic block 7, causing the card plate 5 to disengage from the card slot 6. This causes the planetary gear 3 to disengage from the control column 4. After rotating at any angle so that the card plate 5 and the card slot 6 can no longer be connected, the folding motor 1 can no longer interfere with the rotation of the rearview mirror, and the angle of the rearview mirror can be manually adjusted at will.

[0041] An elastic groove 8 is provided in the center of the control column 4. A ring-shaped foam 9 is provided on the inner wall of the elastic groove 8. Two symmetrically arranged horizontal grooves 10 are provided in the control column 4. Two clamping plates 5 are slidably connected to the two horizontal grooves 10 respectively. One end of the clamping plate 5 is attached to the foam 9.

[0042] The elasticity of the foam 9 itself can cause the card plate 5 to move away from the elastic groove 8. When the card plate 5 corresponds to the card groove 6, the elasticity of the foam 9 can be used to lock the card plate 5 and the card groove 6 together. If the card plate 5 is to be separated from the card groove 6, the card plate 5 uses magnetic force to overcome the elasticity of the foam 9, thereby causing the foam 9 to deform inward.

[0043] A metal cylinder 11 is fixedly connected to the control column 4. The metal cylinder 11 is made of conductive metal. An iron core 12 is fixedly installed inside the metal cylinder 11. An induction coil is regularly wound on the iron core 12, and both ends of the induction coil are connected to the metal cylinder 11. The metal cylinder 11 passes through the control column 4, and one end of it extends into the elastic groove 8. The height of the end of the cylinder extending into the elastic groove 8 is lower than that of the card plate 5.

[0044] The two ends of the induction coil are connected to the metal cylinder 11. When the metal cylinder 11 is energized, the induction coil is energized and generates a magnetic field near the metal cylinder 11. The magnetic field generated attracts the magnetic block 7, causing the card plate 5 to move towards the center of the control column 4 and disengage from the card slot 6.

[0045] The control column 4 is coaxially fixedly connected to the connecting ring 13, and the connecting ring 13 is coaxially fixedly connected to the chassis 14. The power supply 15 is installed on the chassis 14, and the trigger plate 16 is elastically connected to the chassis 14. The trigger plate 16 is made of the same material as the metal cylinder 11. The positive and negative terminals of the power supply 15 are connected to the trigger plate 16 through wires.

[0046] The energization of the induction coil is controlled by adjusting the position of the trigger plate 16.

[0047] A central groove 17 is formed in the center of the chassis 14. A central ring 18 is fixedly connected to the central groove 17. A retaining ring 19 is fixedly connected to the bottom of the central ring 18. A trigger plate 16 is slidably connected inside the central ring 18. A tension spring 20 is set between the trigger plate 16 and the retaining ring 19. The two ends of the tension spring 20 are respectively connected to the trigger plate 16 and the retaining ring 19. The positive and negative terminals of the power supply 15 are connected to the two ends of the trigger plate 16 in the area on the upper side of the trigger plate 16 that does not overlap with the metal cylinder 11.

[0048] With the above technical solution, under natural conditions, the tension spring 20 pulls the trigger plate 16 so that it does not come into contact with the metal cylinder 11, and the induction coil is in a de-energized state. The trigger plate 16 is pushed upward by the central groove 17 to overcome the elastic force of the tension spring 20 until the trigger plate 16 comes into contact with the bottom of the metal cylinder 11, and the induction coil is in an energized state.

[0049] The chassis 14 has a horizontal groove 21, a positioning plate 22 is slidably connected in the horizontal groove 21, and a compression spring 23 is provided in the horizontal groove 21. The two ends of the compression spring 23 are respectively connected to the positioning plate 22 and the inner wall of the horizontal groove 21. The outer shell 2 has multiple positioning grooves 24 that are adapted to the positioning plate 22.

[0050] The end of the positioning plate 22 away from the compression spring 23 is a triangular tip, and the shape of the positioning groove 24 is adapted to the triangular tip of the positioning plate 22 to form a triangular groove shape.

[0051] With the above technical solution, when in manual mode, after rotating the chassis 14 to adjust the rearview mirror angle, the adjusted angle can be kept still when the positioning plate 22 is inserted into the positioning groove 24.

[0052] Working principle:

[0053] In automatic mode, the rotation of planetary gear 3 is controlled by the worm gear transmission of folding motor 1, thereby controlling the angle of the rearview mirror;

[0054] In manual mode, by pushing the trigger plate 16 upward through the center groove 17 to overcome the elastic force of the tension spring 20 until the trigger plate 16 contacts the bottom of the metal cylinder 11, the induction coil is energized and generates a magnetic field that magnetically attracts the magnetic block 7, causing the card plate 5 to disengage from the card slot 6. By rotating the chassis 14 while keeping the trigger plate 16 in contact with the metal cylinder 11, the angle of the rearview mirror can be manually adjusted. During maintenance or replacement, rotating the chassis 14 causes the positioning plate 22 to disengage from the positioning groove 24, releasing it from the constraint of the outer shell 2, thereby allowing the control column 4 and the rearview mirror to be completely detached, facilitating the subsequent replacement of the folding motor 1.

[0055] It should be noted that:

[0056] Foam 9 is a material made of foamed plastic particles. It has a series of characteristics such as elasticity, light weight, quick pressure-sensitive fixing, easy use, flexible bending, ultra-thin size, and reliable performance. In this solution, it is used as the elastic force for the card plate 5 to be inserted into the card slot 6.

[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automotive exterior mirror adjustment mechanism, characterized by The utility model relates to a folding motor (1), a shell (2) for installing the folding motor (1), a planetary gear (3) at the output end of the folding motor (1), a control column (4) in the inner ring of the planetary gear (3) connected with the rearview mirror connecting part, a clamping plate (5) elastically arranged with the control column (4), a clamping groove (6) opened in the inner ring of the planetary gear (3) and clamped with the clamping plate (5) to limit, an induction coil arranged in the control column (4), a magnetic block (7) arranged in the clamping plate (5), wherein the closed loop formed to the induction coil is electrified to generate a magnetic field to magnetically attract the magnetic block (7) to make the clamping plate (5) overcome the elasticity and retract to the control column (4) to release the limitation between the clamping plate (5) and the clamping groove (6), a elastic groove (8) is opened in the central part of the control column (4), a ring-shaped foam (9) is arranged on the circumferential inner wall of the elastic groove (8), the control column (4) is opened with two symmetrical horizontal grooves (10), two clamping plates (5) are respectively slidably connected with the two horizontal grooves (10), and one end of the clamping plate (5) is attached to the foam (9). The control column (4) is fixedly connected with a metal cylinder (11) made of conductive metal material, an iron core (12) is fixedly arranged in the metal cylinder (11), the induction coil is regularly wound on the iron core (12), and the two ends of the induction coil are connected with the metal cylinder (11), the metal cylinder (11) penetrates through the control column (4), one end of the metal cylinder (11) extends into the elastic groove (8), and the height of the end extending into the elastic groove (8) is lower than that of the clamping plate (5). The control column (4) is coaxially fixedly connected with a connecting ring (13), the connecting ring (13) is coaxially fixedly connected with a base plate (14), a power supply (15) is installed on the base plate (14), the base plate (14) is elastically connected with a trigger plate (16) made of the same material as the metal cylinder (11), and the positive and negative electrodes of the power supply (15) are connected with the trigger plate (16) through wires. The base plate (14) is coaxially fixedly connected with a connecting ring (13), the connecting ring (13) is coaxially fixedly connected with a base plate (14), a power supply (15) is installed on the base plate (14), the base plate (14) is elastically connected with a trigger plate (16) made of the same material as the metal cylinder (11), and the positive and negative electrodes of the power supply (15) are connected with the trigger plate (16) through wires. A center groove (17) is opened in the center of the base plate (14), the center groove (17) is fixedly connected with a center ring (18), the bottom of the center ring (18) is fixedly connected with a blocking ring (19), the trigger plate (16) is slidably connected in the center ring (18), a tension spring (20) is arranged between the trigger plate (16) and the blocking ring (19), the two ends of the tension spring (20) are respectively connected with the trigger plate (16) and the blocking ring (19), and the two connecting ends of the trigger plate (16) are located in the area, which is not overlapped with the metal cylinder (11), on the upper surface of the trigger plate (16). The base plate (14) is opened with a horizontal groove (21), a positioning plate (22) is slidably connected in the horizontal groove (21), a compression spring (23) is arranged in the horizontal groove (21), the two ends of the compression spring (23) are respectively connected with the positioning plate (22) and the inner wall of the horizontal groove (21), and the shell (2) is opened with a plurality of positioning grooves (24) matched with the positioning plate (22). The end of the positioning plate (22) away from the compression spring (23) is a triangular pointed end, the shape of the positioning groove (24) is matched with the triangular pointed end of the positioning plate (22), and a triangular recessed groove shape is formed. ​ ​ ​ ​ ​ ​ ​ 2. A fine adjustment mechanism for an automotive mirror according to claim 1, wherein ​ 3. A fine adjustment mechanism for an automotive mirror according to claim 2, wherein ​

Images